Valved twin-piston

ABSTRACT

A compressor having a valved twin-piston reciprocating in a cylinder disposed in an air container. Part of the air compressed is used to power auxiliary drive means for the compressor.

Unite States Patent Richter [54] VALVED TWIN-PISTON [72] Inventor: Lewis Richter, 2nd & Valnut SL, Des

Moines [22] Filed: Jan. 13, 1970 [21] App]. No.: 2,980

[52] U.S. Cl ..4l7/459 [51] Int. Cl ..F04b 21/00, F04b 39/00 [58] Field of Search ..417/459, 443, 444, 534

[56] References Cited UNITED STATES PATENTS Knowles .....417/4f13 X I [451 in l Jim 2,442,631 6/ l 948 Winkler ..4 17/443 3,118,390 1/1964 Kinsley 3,233,554 2/1966 Huber et al. ..4l7/534 X Primary Examiner-Leonard H. Gerin ABSTRACT A compressor having a valved twimpiston reciprocating in a cylinder disposed in an air container. Part of the air compressed is used to power auxiliary drive means for the compressor.

16 Claims, 6 Drawing Figures .aleaass'e PATENTEU JAN 1 8 m2 SHEEI 1 0F 2 PATENTEU JAN 1 8 I972 SHEET 2 UF 2 FIG 5.

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INVENTOR.

FIG 6.

VALVED TWIN-PISTON This invention relates to pressure systems having a particular reference to a novel and improved compressor which is set in a discretionary container, performs air suction from the outside through a valve, with outlet port provided valved twinpiston, to convert the combination of suction and pressure through the piston outlet port cover into rotational motion.

The primary objective of my invention is to provide a novel and improved compressor having chambers in the piston and working chambers in the cylinders reciprocable therein, and wherein the piston a novel valve is slidable operative under pressure differences in said working chambers and said piston chambers. The piston and its valves are so connected to each other, that by the suction it creates a complete closed body.

An object importantly related to the primary object above resides in the provision of a novel slidable piston outlet port cover whose function is to close and open the outlet ports on both chamber side of the piston with the same movement, for the necessary counter pressure from the container and the necessary elimination of it in the same time within the piston movement of the two different outlet ports and piston chambers, whereby on the intake stroke side the outlet ports are covered there is no resistance to counter act. To the contrary of this, on the end of the intake stroke the piston outlet port cover slides back from it (to cover the other outlet side to eliminate the direct container pressure from the intake) and the full counterpressure is applied on the piston chamber valve, by the pressure differences in the container pressure and in the cylinder working chamber atmospheric air pressure, and is forced into the cylinder chamber until the pressure differences are equalized in them, then piston valve will open (pushed back) automatically after a light difference between the pressures.

Through this piston push into the cylinder chamber, the in side pressure is utilized for removed rotating energy source to the driving axis which comes from the suction movement of the piston.

Another important object related to the primary object is to provide a novel extending equalizing shaft on the axis of its rotation, on which impellers or airscrews are mounted, one end connected to the crank arm the other in a duct to the outflowing air pressure orifice, whereby the constant outflowing air applied upon the impeller causes the said to revolve about its axis consequently additional rotating force supplied to the driving axis which is already in motion.

The valve twin-piston is in a container air space driven through a suitable crank arm connected to driving axis, which extends to the outside from the container to a driving source (or to be replaced with one electric motor in the inside of the container to eliminate the outside axis extension) to drive the main shaft, and is reciprocated to draw air through the inlet port valve. In the same time as piston makes the suction in the cylinder, piston valve and outlet port cover isolate the container pressure from the piston chamber, and cylinder chamber, displaces the air into the container through the piston chamber after piston has completed the suction movement, and as a twin-piston no longer can apply counterpressure on the piston chamber valve, because pressures are equalized in the cylinder chamber and container.

The illustration of the invention is on the enclosed drawings in which:

FIG. 1 shows in a longitudinal view of my novel valved twinpiston compressor with its valves, outlet ports, the beginning and ending of the suction in the same time, the drive shaft with its sealing means, and the extended drive shaft with the impellers.

FIG. 2 is a longitudinal view of the twin-piston with the inner thread for coupling the two half piston together, the outlet ports, and slots where the piston reciprocating shaft is going through.

FIG. 3 is a longitudinal view of the cylinder inlet valvehousc, the piston inner valve, and its housing connected to the threaded interconnecting piston coupler.

FIG. 4 is a longitudinal view of the sliding outlet port cover, and as the sliding cam is engaged to reciprocate the outlet port cover.

FIG. 5 is the same as FIG. 4 but it illustrates the side guiding slot in the outlet port cover where the piston reciprocating shaft goes through.

FIG. 6 is a longitudinal view of one ofthe cylinders.

As shown on the drawings:

The principles of this invention is particularly useful when embodied in a container or boiler, illustrated on FIG. ll.

The valved twin-piston has as its primary parts, drive shaft 24, cylinder 2,2, piston valves 6,6, and cylinder valve 119, hollow piston 4,4, additional drive shaft 25, and a outlet port cover 9.

In a container 1 in which a driving axis 24 extends from the external surface of the container I through a sealing means 27 with its expansion-type ring 38 and crank arms 26,26 to the opposite external surface of the container 1, with impeller mounted on it.

The cylinders 2,2 are independently fastened from each other to the container 1 wall by bolts 42 (or as a whole unit mounted on a frame and placed in the container air space openly) in it seated a valvehouse 20 with its valve 119 and stem 22 supported with a spring 23, provides the main entry stream into the cylinder working chamber 3,3.

The hollow suction valved twin-piston 4,4 with its outlet ports 12,12 inlet port 17 valve seat 14 and groove illustrated on FIG. 2 disposed in the cylinder 2,2 provided with working chambers 3,3 therein. The reversed formed valves 6,6 are in the piston chamber 5,5 with stem 8 placed in the valvehouse 7 illustrated on FIG. 3. This valve is slidlable supported in bore 18 in the housing portion and by the piston inlet port valve seat 14. The piston ring 15 in groove 16 on the surface of the piston, provides a good seal between the inner pressure and cylinder chamber 3,3 during the intake stroke. Valvehouse 7,7 so formed that it fit in the piston chamber 5,5, and connected to the threaded interconnecting coupler it) supported only not complitely round by 34 on the piston wall 40.

To connect the two half pistons 4,4 together, the inner surface of the pistons are threaded 11,11, and to make a union of the two half pistons 4,4 as twin the threaded interconnecting coupler is screwed into the piston 4,4 inner thread HA1, and united into one solid piece and divides the outlet ports 12,12 in the same time. A bore 32 in the threaded interconnecting coupler 10 illustrated on FIG. 3 is provided for bearing shaft 33 which is stationary in it for the connection from both side of the piston to crank arms 26,26 to reciprocate the same to draw air into the cylinder chamber and displace it through the piston chamber into the container,

The outlet port cover 9 with its side slot 13 provided on the piston to separate the two outlet ports 12,12 is slidable reciprocating to cover the outlet port I12 or 12 during the intake stroke period, and keep the other side open for a direct counterpressure.

The extended drive shaft 25 is provided with impellers 30 mounted unit and set in duct 31 to the constant outflowing air orifice 35 to utilize the constant outstreaming air pressure for additional rotating force to the shaft 25.

The operation of the valved twin-piston, illustrated on FIG. l is as follows.

Starting in the position illustrated on FIG. 1 the piston 4 will have an intake stroke with the valve 6 in the piston 4 closed, the outlet port 12 on the piston 4 also closed by the outlet port cover 9 to draw air in known manner into the working chamber 5 through the valve 19. The twin-piston which is indicated at 4 with its valve 6' closed, but the outlet port 12 open with atmospheric air pressure in its cylinder 2' working chamber 3. As the shaft 24 revolves about its axis of rotation the piston 4 moves away from the valve 19 creating a vacuum by the piston 4 intake stroke to be opened during the suction cycle, causing the chamber 3 to increase in volume. During the intake outlet port 12 is closed by the outlet port cover 9 until the end of the intake stroke, and as reciprocation continues the outlet port cover 9 slides back through the cam 28 from the outlet port 12 to cover the outlet port 12 on piston 4' which is by now in an intake stroke. As the outlet port cover 9 slides away from the outlet port 12 the container l inner pressure will apply a direct counterpressure upon the piston 4 chamber 5 valve 6, and force the piston 4 toward the cylinder 2 chamber 3 valve 19 from the differences between the two pressure until the pressures are equal in the container 1 and cylinder 2 chamber 3. And as the reciprocating movement continues with the force applied on the piston 4 valve 6 which has free sliding movement in its housing 7 in the piston 4,4 chamber 5,5 actuates itself by the pressure differences of its own timing, automatically opens (pushed back) and displaces the air into the container 1 through the outlet port 12 by the slightest pressure differences between the container 1 and cylinder 2 chamber 3. At the same time piston 4 with its covered outlet port 12 makes the intake stroke as long as piston 4 continues the displacement. At completion of the displacement stroke, the inside pressure will close (push in) the piston 4 valve 6 automatically as it comes to the top dead end in the cylinder, and piston 4 will start the next intake stroke. To avoid the direct counterpressure at all times during the intake stroke on piston 4 or 4' valve 6 or 6 in the piston chamber 5 or 5 through the outlet ports, an outlet port cover illustrated on FIG. 5 is provided to eliminate until the suction is completed. The outlet port cover 9 length, which is from edge to edge of the outlet ports will determine the correct opening and closing of the outlet ports 12,12 through the timing cam 28, 28', which means that at the intake stroke end both 12 and 12' openings has to be closed at the same time by the outlet port cover 9, as shown in FIG. 1 by 36 and 37. The cam sliding length on the outlet port cover 9 fit 29, is twice the outlet port opening width, means that at the intake stroke end as the outlet port cover 9 slides back to open it is moving backward until the outlet port is completely open, but piston is moving forward displace direction, which means that piston and outlet port cover are moving two different directions in the same time, until approximately half the intake stroke, by then timing cam 28,28 slides off from the intake stroke side fit 29 and slides upon the displace direction fit 29, therethrough reverses itself, and starts to close the other outlet port side. The timing cams 28,28 are designed to reciprocate the outlet port cover 9 which are mounted on the crank arms drive shaft 43,43 with the association of a sliding fit 29 on the outlet port cover 9, which is illustrated on FIG. 4. The outlet port cover 9 has the bore of the piston 4,4, and slides over them before assembled into the cylinder, and so positioned that shaft 33 goes through the slot 13 on the outlet port cover 9, then connected to the crank arms 26,26. The additional rotating force developed through the constant outflowing air pressure by the impeller 31 is transmitted to the shaft 25, and crank arm 26.

To close and open for operation to a receiver, a closing valve is used as normally is used on any compressors by the impeller 30 air outflow orifice 35.

It should be understood that I do not wish to limit my inven' tion to the above described novel association of elements and details, and that the invention is intended to include such other modification and/or substitutions readily apparent to persons skilled in the art to which the invention relates, as defined by the terms of the claims.

I claim as my invention.

1. A valved twin-piston in a container air space as a compressor, also to convert air suction and pressure with the combination of the constant outflowing air to a receiver into rotational motion comprising:

a. a suction twin-piston having enclosed hollow chamber disposed in a container space provided with separate outlet ports (12,12), two valvehouse (7,7) with valve in each piston chamber adapted to draw into and receive air from said cylinder chamber to discharge it through said piston chamber outlet ports, said piston being disposed in separate cylinders both ends to provide working chambers therewith and reciprocate drawing air therein, an

inlet port into said chamber in such a way disposed that through said piston valve an opening exists;

b. a threaded interconnecting piston coupler (10) to form one solid piece out of two half-piston, thereby dividing said outlet openings in said piston chamber from each other in order to put said cylinder working chamber and container in communication with one another during the reciprocation;

. a sliding outlet port cover (9) providedupon said piston with the function to close the piston outlet port (12 or 12), divide and prevent a direct container pressure to counteract in said piston chamber at said intake side during said intake stroke, and open to create one at the end of said intake stroke, has the bore of said piston, reciprocates to close and open said outlet ports at the requires time with the association of said timing cam, and fit;

d. a reversed formed inlet valve (6) in separate piston chamber independently located from each other, which are freely sliding in said supporting bore of said housing portion to communicate between said cylinder chamber and piston outlet port, said valves are regulated automatically to open and close by said cylinder work chamber air and said container pressure along in its valve seat, and does not open at the end of said intake stroke, but later after equalizing as it reciprocates compressing said air is reached in said cylinder work chamber, and container;

e. one extended drive shaft (25) on the axis of its rotation connected to said crank arm and bearing in a duct at said constant outflowing air orifice, on which impellers or airscrews are mounted which are synchronized with the revolution of said driving axis by the number of said impellers, to have the same revolution, whereby said constant outflowing air pressure applied upon said impellers causes said impeller to revolve about its axis and deliver additional rotating force to said driving source;

f. a main air inlet means provided in said separate cylinder chambers made up of a valve inlet seat and stem supported by means of a closing spring in its housing, with two inlet ports; and

g. a crank means having a crank portion connected from both side, the impeller side and from the driving source side to said piston and crank arms, to reciprocate the same to draw air into said cylinder chambers through said main inlet valve and displace it through said piston chamber outlet ports.

2. A valved twin-piston according to claim I, wherein said piston chamber has threaded means disposed on said inner surface of said inner chamber for coupling said two half piston into one solid piece as a twin.

3. A valved twin-piston according to claim 2, wherein said piston wall outlet ports are provided, said container being in communication with said piston chamber.

4. A valved twin-piston according to claim 3, in which said outlet ports are disposed at the rear of said piston from said piston inlet.

5. A valved twin-piston according to claim 4, wherein said inlet means each include an entry port and a freely sliding valve, actuated automatically by pressure differences to open and communicate between cylinder chamber and container, through said piston chamber.

6. A valved twin-piston according to claim 4, in which said outlet port is isolated from said container direct pressure by said outlet port cover, during said intake stroke.

7. A valved twin-piston according to claim 5, in which said means for applying air suction into said cylinder work chamber, further include a outlet port cover disposed slidable on said piston adjacent to said outlet ports, which is in communication with said piston chamber for applying, and, eliminating direct counterpressure on said piston chamber valve from said container.

8. A valved twin-piston according to claim 7, wherein said outlet port cover at said intake stroke end, slides back through a sliding cam in association with a fit means to open said outlet port for communication between piston chamber and container.

9. A valved twin-piston according to claim 1, in which an extending equalizing shaft with said impeller or airscrew, is connected to a constant inflow receiving line by said air outflow orifice.

10. A valved twin-piston according to claim I, in which a valve is disposed in each of said main inlet valvehouse, and a spring to close said valve which is actuated by said intake stroke vacuum.

11. A valved twin-piston according to claim 5, wherein said inlet means each include a inlet entry and valve in said inner bore of said housing, which is connected to said threaded interconnecting coupler to carry said valvehouse.

12. A valved twin-piston according to claim 2, wherein said pistons are screwed together with said threaded interconnecting coupler, and said two half piston can be adjusted to a maximum stroke with respect to said suction inlet through its threads.

13. A valved twin-piston according to claim 1, in which a driving axis which extends from the external surface of said container through a sealing means to said piston to reciprocate the same to draw air in said cylinders and displace it through said piston chamber and outlet port into said container.

14. A valved twin-piston according to claim 8, wherein said outlet port cover as it slides back from said outlet port, said direct counterpressure enters by (36 or 37) from said container into said piston chamber, and does force said piston inward into said cylinder chamber, therethrough said axis to revolve about said crank and delivers additional rotating force to said drive shaft.

15. A valved twin-piston according to claim 14, wherein said outlet port cover is provided to avoid said direct counterpressure at all times during said intake stroke, and to create one for the necessity of it at said end of said intake stroke.

16. A valved twin-piston according to claim 1, wherein said outside driving source replaced by one electric motor in said container air space, and said twin-piston mounted on a frame as a whole unit and then connected to said inlet, and said outlet air orifice to said container surface to a receiver. 

1. A valved twin-piston in a container air space as a compressor, also to convert air suction and pressure with the combination of the constant outflowing air to a receiver into rotational motion comprising: a. a suction twin-piston having enclosed hollow chamber disposed in a container space provided with separate outlet ports (12,12''), two valvehouse (7,7'') with valve in each piston chamber adapted to draw into and receive air from said cylinder chamber to discharge it through said piston chamber outlet ports, said piston being disposed in separate cylinders both ends to provide working chambers therewith and reciprocate drawing air therein, an inlet port into said chamber in such a way disposed that through said piston valve an opening exists; b. a threaded interconnecting piston coupler (10) to form one solid piece out of two half-piston, thereby dividing said outlet openings in said piston chamber from each other in order to put said cylinder working chamber and container in communication with one another during the reciprocation; c. a sliding outlet port cover (9) provided upon said piston with the function to close the piston outlet port (12 or 12''), divide and prevent a direct container pressure to counteract in said piston chamber at said intake side during said intake stroke, and open to create one at the end of said intake stroke, has the bore of said piston, reciprocates to close and open said outlet ports at the requires time with the association of said timing cam, and fit; d. a reversed formed inlet valve (6) in separate piston chamber independently located from each other, which are freely sliding in said supporting bore of said housing portion to communicate between said cylinder chamber and piston outlet port, said valves are regulated automatically to open and close by said cylinder work chamber air and said container pressure along in its valve seat, and does not open at the end of said intake stroke, but later after equalizing as it reciprocates compressing said air is reached in said cylinder work chamber, and container; e. one extended drive shaft (25) on the axis of its rotation connected to said crank arm and bearing in a duct at said constant outflowing air orifice, on which impellers or airscrews are mounted which are synchronized with the revolution of said driving axis by the number of said impellers, to have the same revolution, whereby said constant outflowing air pressure applied upon said impellers causes said impeller to revolve about its axis and deliver additional rotating force to said driving source; f. a main air inlet means provided in said separate cylinder chambers made up of a valve inlet seat and stem supported by means of a closing spring in its housing, with two inlet ports; and g. a crank means having a crank portion connected from both side, the impeller side and from the driving source side to said piston and crank arms, to reciprocate the same to draw air into said cylinder chambers through said main inlet valve and displace it through said piston chamber outlet ports.
 2. A valved twin-piston according to claim 1, wherein said piston chamber has threaded means disposed on said inner surface of said inner chamber for coupling said two half piston into one solid piece as a twin.
 3. A valved twin-piston according to claim 2, wherein said piston wall outlet ports are provided, said container being in communication with said piston chamber.
 4. A valved twin-piston according to claim 3, in which said outlet ports are disposed at the rear of said piston from said piston inlet.
 5. A valved twin-piston according to claim 4, wherein said inlet means each include an entry port and a freely sliding valve, actuated automatically by pressure differences to open and communicate between cylinder chamber and container, through said piston chamber.
 6. A valved twin-piston according to claim 4, in which said outlet port is isolated from said container direct pressure by said outlet port cover, during said intake stroke.
 7. A valved twin-piston according to claim 5, in which said means for applying air suction into said cylinder work chamber, further include a outlet port cover disposed slidable on said piston adjacent to said outlet ports, which is in communication with said piston chamber for applying, and, eliminating direct counterpressure on said piston chamber valve from said container.
 8. A valved twin-piston according to claim 7, wherein said outlet port cover at said intake stroke end, slides back through a sliding cam in association with a fit means to open said outlet port for communication between piston chamber and container.
 9. A valved twin-piston according to claim 1, in which an extending equalizing shaft with said impeller or airscrew, is connected to a constant inflow receiving line by said air outflow orifice.
 10. A valved twin-piston according to claim 1, in which a valve is disposed in each of said main inlet valvehouse, and a spring to close said valve which is actuated by said intake stroke vacuum.
 11. A valved twin-piston according to claim 5, wherein said inlet means each include a inlet entry and valve in said inner bore of said housing, which is connected to said threaded interconnecting coupler to carry said valvehouse.
 12. A valved twin-piston according to claim 2, wherein said pistons are screwed together with said threaded interconnecting coupler, and said two half piston can be adjusted to a maximum stroke with respect to said suction inlet through its threads.
 13. A valved twin-piston according to claim 1, in which a driving axis which extends from the external surface of said container through a sealing means to said piston to reciprocate the same to draw air in said cylinders and displace it through said piston chamber and outlet port into said container.
 14. A valved twin-piston according to claim 8, wherein said outlet port cover as it slides back from said outlet port, said direct counterpressure enters by (36 or 37) from said container into said piston chamber, and does force said piston inward into said cylinder chamber, therethrough said axis to revolve about said crank and delivers additional rotating force to said drive shaft.
 15. A valved twin-piston according to claim 14, wherein said outlet port cover is provided to avoid said direct counterpressure at all times during said intake stroke, and to create one for the necessity of it at said end of said intake stroke.
 16. A valved twin-piston according to claim 1, wherein said outside driving source replaced by one electric motor in said container air space, and said twin-piston mounted on a frame as a whole unit and then connected to said inlet, and said outlet air orifice to said container surface to a receiver. 